Signal flow (both video and audio) and the technical rig

Video

- First the light goes through the front of the camera and is then concentrated by the lens.
- The signal from the lens then goes through into a converter box which is under the camera, this converts it in another signal called SDI which stands for (Serial digital interface).
- A cable from the converter box then gets plugged into a STOB box and then goes into a technical rack, this is very similar to an old telephone exchange.
- The signal is then distrobuted into a CCU which is then viewed on dedicated monitors for each camera.
- This then goes through into the vision mixing panel, and the output is selected, it is either line out or programme out, it is then recorded in to the HDD which stands for (hard disc drive).

Audio

- First the audio goes through into the STOB box.
- Then it goes from there into the technical rack, using wifi.
- There are usually a minimum of seven mics used, so all of the seven mics feed into the audio mixing desk, which have faders to control the levels of each mic and also a master fader to control the level of all of the mics.
- Then it is very similar to the video, because you choose either the (line out of programme out) output, and then it records into the HDD.
- On the audio mixing desk there is a metre know as the VU metre, which shows you the sound level of each mic aswell as the overall output. It is very important to make sure that the peak sound level does not go over +9 or below - 12 on the VU metre. If the sound levels go to high this could cause distortion which could ruin the sound and could also damage the equipment. If the sound levels are two low, it means that the volume will constantly need to be very loud to hear the actual speech. On the VU metre, every +3 doubles the volume of the sound and every -3 halves the volume of the sound.